package assignment15;
import com.sun.xml.internal.ws.api.model.wsdl.WSDLOutput;
import org.w3c.dom.ls.LSOutput;
public class Test {
public static void main( String[] args ) {
Printer printer= new DotMatrixPrinter(){};//就是这个括号
Printer printer1=new InkpetPrinter();
printer.Print();
printer1.Print();
}}
抽象子类继承抽象父类
package assignment15;
public abstract class DotMatrixPrinter extends Printer {
@Override
void Print() {
System.out.println("针式打印机");
}
}